Abstract

Carbon-based micro-supercapacitors dedicated to energy storage in self-powered modules were fabricated
with inkjet printing technology on silicon substrate.Aninkwasfirst prepared by mixing an activated
carbon powder with a PTFE polymer binder in ethylene glycol stabilized with a surfactant then deposited
by inkjet on patterned gold current collectors with the substrate heated at 140 ◦C in order to assure a
good homogeneity.
Electrochemical micro-capacitors with electrodes in an interdigital configuration were fabricated, and
characterized using electrochemical techniques in 1M Et4NBF4 propylene carbonate electrolyte. These
micro-devices show an excellent capacitive behavior over a wide potential range of 2.5V for a cell capacitance
of 2.1mFcm−2. The newly developed technology will allow the integration of the storage device
as close as possible to the MEMS-based energy harvesting device, minimizing power losses through
connections.

Item Type:

Article

Additional Information:

Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Power Sources website : http://www.sciencedirect.com/science/journal/03787753